Numbering-machine.



M. H. KERN.

NUMBERING MACHINE.

APPLICATION HLED SEPT-17.1913- 1 1 44:, 1 3 8. Patented June 22, 1915.

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M. H. KERN.

NUMBERING MACHINE.

APPLICATION FlLED SEPT. 11. 1913.

1,14%,138 Patented June 22, 1915.

3 SHEETS-SHEET 2.

lbiiilllmn-imlll AttesZ/ 5'6 1601M, Inventor:

Hr. NORRIS PETERS C0 PHOTO-LITHO.. WASHINGTON. D. c.

M. H. KERN.

V NUMBERING MACHINE. APPLICATION FlLED SEPT. 17. I913.

Patented June 22, 1915.

3 SHEETS-SHEET 3.

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'IHE NORRIS PETERS 60., PHOTG-LITHQ, WASHINGTON. D c.

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MAXIMILIAN H. KERN, 01E BROOKLYN, NEW YORK, ASSIGNOR TO THE ROBERTS NUM- BEBING MACHINE COMPANY, OF BROOKLYN, NEW YORK, 15. CGRPORATION OF NEVJ YORK.

NUMBERING-MAGHINE.

Application filed September 17, 1913.

To all whom "it may concern Be it known that I, MAXIMILIAN H. KERN, a citizen of the United States, residing at 288 Forest avenue, Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improve ments in Numbering-Machines, of which the following is a specification.

This invention relates to numbering machines of that class which comprises a series of numeral wheels arranged in a frame adapted to be vertically reciprocated by means of a handle or otherwise and when reciprocated to actuate automatically a multiple pawl whereby the numeral wheels are normallv advanced automatically in unison with each actuation of the machine, and its novelty consists in the construction and adaptation of the parts whereby means of an exceedingly simple, inexpensive and conveniently manipulative type are provided to retain on the numeral wheels and repeat any desired reading a predetermined number of times without any further or other attention on the part of the operator.

Another object is to provide a device of the class described which is capacitated for ready and eflicient attachment to various different types of numbering machines or the like, and especially to types already known in the art.

Other objects and aims of the invention, more or less broad than those stated above, together withthe advantages inherent, will be in part obvious and in part specifically referred to in the course of the following description of the elements, combinations and arrangements of parts constituting this invention, and the scope of protection contemplated will appear from the claims.

Referring now to the accompanying drawings, which are to be taken as a part of this specification and wherein is shown one of the various possible embodiments of the invention as at present preferred, Figure 1 is a front elevation of the device as attached to a familiar type of numbering machine for instance that shown in United States Letters Patent 1'30. 789,111; Fig. 2 is a side elevation of such machine and device, partly in section; Fig. 3 is a front elevation of the device itself, and on an enlarged scale, the case (3 being removed; Fig. 4 1s a side elevation of Fig. 3, looking from the left; Fig.

' Sis a side elevation of Fig. 3, looking from Specification of Letters Yatent.

Patented June 22, 1915.

Serial No. 790,223.

the right; Fig. 6 is a section on the line 6-6 of Fig. 4; Fig. '7 is a section on the line 7-7 of Fig. 5, the parts being shown in the position they assume when the machine is pressed down to cause the numeral wheels to come to printing position; Fig. 8 is a section on the line 8-8 of Fig. 3; Fig. 9 is a view similar to Fig. 3, but showing the parts in the position they assume when impressing a number four times, one impression having been made; Fig. 10 is a side elevation of Fig. 9, looking from the right; Fig. 11 is a perspective view of the inner face of the dialplate and cam-plate; and Fig. 12 is a similar view of the split-washer 67 which coiperates with the disk 66 shown in Fig. 8 to maintain in place the spiral spring 62 shown in rigs. 6 and 8.

Similar reference characters refer to similar parts throughout the several views of the drawings.

There will first be described as much as is necessarv the construction of the machine with which the present embodiment of this invention is as aforesaid assumed to be associated. Thus, the stationary frame of the machine comprises an inverted Ushaped body portion including a horizontal portion 4, two perpendicular legs or stand"- and a tubular extension 3. The legs or standards 5 have grooves 6 on their inner faces to receive the ends of the usual wheelcarrying shaft.

The wheel-carrier comprises a frame 7 and a stem 8. The stem 8 passes up through a perforation in the horizontal portion 4; of the frame and through the tubular extension 3. The outside diameter of the stem 8 is less than the inside diameter of the extension 3, and a spring 9 is received and housed between the said stem and tubular extension. A hand-piece 10 is suitably secured to the end of the stem 8, and the said handpiece is counter-bored in the usual manner to receive the tubular extension and to permit free reciprocal movement of the hand piece upon the stem. Pressure upon the top of the hand-piece 10 will depress same against the tension of the spring 9. forcing the wheel-carrier down to the printing position in a manner well-known. When the hand-piece is so depressed, it telescopes the extension 3, said extension forming a shield or housing for the spring 9 and stem 8, but

of the parts. The stem 8 is notched at a point intermediate its length, so as to form an abutment 11, to the end that when desired it may be placed in engagement with a suitable detent to maintain for any length of time the wheel-carrier in the depressed or printing position.

The wheel-carrier supports a transverse wheel-shaft 12 suitably mounted in the frame 7 thereof. The ends of the shaft 12 protrude beyond the frame 7 of the wheelcarrier and enter the grooves 6 in the standards or legs of the main frame. By this construction the wheel carrier is guided and is prevented from turning. The Wheel-shaft in this class of machines is usually held stationary in its support, and the numbering wheels 13 are mounted thereon to turn freely under the influence of their actuating mechanism. The actuating mechanism comprises a plurality of pawls 14 carried by a portion of the device I here term a rocking member. The rocking member, designated by the reference character 15, is pivotally supported upon the stationary frame by means of pivot-screws 16, which pass through the legs or standards 5 of the frame and enga e the said rocking member. The rocking member 15 comprises a substantially rectangular framework, and as so constructed the rocking member forms a guard or inclosure for the wheel-carrier and wheels when in its upper or retracted position and also forms a carrier for the operating pawls 14 and a support for the ink-pad carrier 15'. The pawls 14 are hung from a transverse bar or spindle 21 carried by the rocking member 15, the outer ends of which bar or spindle project beyond the said rocking member and form pivots for the outer ends of links or rocker-arms 17, loosely mounted at their other ends upon the wheel-shaft 12. Links 18 are'pivotally connected at their opposite ends with the wheel-carrier 7 and the ink-pad carrier 15 as shown.

In operation, depression of the hand-piece 10 causes the wheel-carrier to descend until the wheels carried thereby are brought into printing position, i. 6., with their periphcries in the slot 19 in the base-plate This effects a double result. First, the portion of the rocking member 15 which carries the pawls 14 will be caused to describe an arc struck with the axis of the shaft 12 as a center. This will cause the pawls carried by the rocking member to move concentrically with respect to the wheels upon reciproca- 7 tion of the wheel-carrier, whereby an angular reciprocation will be given to the pawls, causing them in their return movement to actuate the wheels in a manner well-known, while the pivotal axis of the said pawls retains its proper relation to the pivotal axis of the wheels. herein the action of the operating pawls I will not describe in. detail upon the wheels, as such action is well known and forms in itself no part of the present invention. The rocking movement of the rocking member 15 will at the same time cause that portion thereof which pivotally supports the ink-pad carrier to move outwardly, thus carrying the ink-pad carrier with it.

The foregoing is a description of the general features of the said machine, and ,now the features of the device forming an embodiment of the present invention may be taken up.

In Figs. 8, 4 and 5 the above-mentioned pawls 14 are more clearly disclosed as being formed on the inner or under face of the normally depending plate 20 which is directly hung on the spindle 21. Accommodated within the slot 22 and encircling'the spindle is a coil spring 23 normally adapted to maintain the pawls 14 effective upon each downstroke of the stem 8 (Fig. 2) to advance a number n, in accordance with.

means well-known (ride the notch 32 on the wheel 13, Fig. 5), say to n+1. Above the spindle 21, and fixedly mounted as shown upon the rocking member 15, there is disclosed inthis embodiment a plate 27 for the support of certain of the parts hereinafter described, to wit, the parts constituting the present embodiment of this in-- vention. At this point an important purpose of the present invention may advantageously be recalled, which" is to control in advance how many times any number nwill be efliciently brought to the printing position before the number n+1 will be set up by the numeral wheels; in other words, to control in advance the inability of thep'awls 14 to advance the reading of the numeral w ieels for a certain number of depressions of the stem 8 after a single effective advance of said reading by said pawls when released to effectiveness. And therefore, the reason whereof appearing more clearly hereinafter, the lever 24, pivoted to the plate 20 as at 25 and having associated with the same'as shown the spring 27 to urge the tooth 26 to travel during the up and down strokes of stem 8 in contact with the outer face of the plate 27, will be herein referred to as the pawl-controlling lever. This travel of tooth 26, upon each reciprocation of stem 8 (Figs.-1 and .2) is due to the rocking of rocking member 15 upon its fixed pivot 16 and the simultaneous upward throw of the plate 20 caused via the link plate 33 (a face view of which is shown in Fig. 3 and the construction of which is well-known), which link-plate has two down-turned ears as shown to pivotally engage the spindle 21' and which link-plate has familiar portions that extend rearwardly from the observer of Fig. 3 toward the interior of the machine to pivotally engage the wheel-shaft 12. Now, if during any single downward and return actuation of stem 8, the tooth 26, as it rides over the outer surface of plate 27 from the point 29 of Figs. 3 and 5 to the point 30 of Figs. 9 and 10 and thence back to said point 29, is not engaged by the stop-arm 28, the pawls 1-1 will properly advance the previous read ing a to n+1; and if said tooth 26 is engaged by said latch-arm 28, the pawls 14 will be held in the inefi'ective position shown in Fig. 10, thereby causing the previous number n to be repeated a predetermined number of times, and will not become effective to advance against a numeral wheel as shown in Fig. 5 until the tooth 26 is disengaged from stop-arm 28. This disengagement is predeterminedly brought about in accordance with the hereinafter-explained setting of the dial 31 and the consequent setting of the teeth 38 (see Figs. 6 and 11) in mesh with a predetermined plurality of the teeth of the ratchet 39 (see Fig. 6). The pawl-controlling lever 2i aforesaid then is here what may be termed the result-accomplishing connection between the moving parts of the machine above referred to and the present embodiment of this invention. And before going further into the details of the structure here mounted as an embodiment of this invention upon the plate 27, attention may be called to what may be termed the adjusting connection between said machine and said embodiment, to wit, the arm 35, pivotally hung on the spindle 21 but, as indicated best in Fig. 4, having a rearwardlyextending integral extension conforming substantially to the outlines of the rocker arm 17, this rocker-arm being shown partially in said Fig. & but completely in side elevation in Fig. 2, said extension loosely engaging the movable wheel-shaft 12 (said Fig. 2). When it is noted that the link 40 is pivoted as at 41-1 to the arm 35, that said link 10 carries as shown a slot always to engage the pin 42 (the pin 42 being as hereafter described capacitated through intermediate means to shift the dial 31 and the adjusting instrumentalities associated there with), and that, upon each downward reciprocation of the stem 8 (Fig. 2) and upon the concomitant tilting forward of the plate 27 (carried as aforesaid by the rocking member 15, which latter thus tilts in the manner well-known in this art and as mentioned hereinbefore), the downward travel of the wheel-shaft 12 thrusts upward the arm 35, it will be seen that, simultaneously with the above-described upward travel of tooth 25 from the location shown in Fig. 6 to the location shown in Fig. 7, the link 40 travels upwardly from the location shown in Fig. 6 to the location shown in Fig. 7; and accordingly it will be understood why the arm 35 is termed the adjusting connection.

Now referring particularly to Figs. 4; to 12, inclusive, it will be seen that the plate 27 carries a fixed split post 36 (mounted therein as shown in Fig. 8), and that said plate is provided with a transverse, substantially arcuate slot 37, the floor of which slot is established by a portion of rocking-member 15. A link 15 at one end loosely sleeves said post, and at its other end has pivotally connected thereto as at 4 0 a lever 41-7 carrying terminally a pawl 48, an underhung pin 49 to ride in said slot and thereby guide the pawl 48, and the pin which engages the lever 40; the leaf-spring 50 being provided to "force said pin 49 to travel in contact with the ri hthand wall of the slot 37. A lever 51 is pivoted to plate 27 as at 52, and is provided with latch-arm 53 at one end and at its other end with a nose 5 as shown. The portion of link 41-55 which sleeves post 36 carries as shown a cam-nose 55 located intermediate an exterior arcuate wall, and the leaf-spring 56 urges the nose 54 against said wall so that each time the lever 4-0 thrusts upwardly the consequent movement of the link 15 will momentarily trip the lever 51. "When not in its tripped position, said lever 51 is adapted to have its latcharm 53 engage as shown in Fig. 6 with the latch-arm 57 carried by the release-lever 43. This lever 43 is pivoted to the plate 27 as at 58, and is normally urged to maintain the latch-arms 53 and 57 out of engagement by means of the provision of the leaf-spring 59. A. detent 60 is also carried by the re lease-lever, and this detent is horizontally slotted as most clearly shown in Figs. 5 and 8.

The ratchet 39 is loosely sleeved on post 36 above the link 45., and is separated from the latter by the collar 61 shown in Fig. 8 as being integral with said post. As disclosed in Figs. 6 and the upper face of the ratchet is cupped to accommodate the spiral spring 62, one end 01 said spring being anchored in the split post 36 and its other end to the pin 63 carried interiorly of the ratchet: and the underside of said ratchet carries a stop-pin 6 1 (indicated in dotted lines in Fig. 7) adapted to cooperate with a stop-pin 65 (similarly indicated in said Fi 7) to conclude the whirling, by the spring 62, of said ratchet in an anti-clockwise direction back to normal position as hereinafter described. The disk 66 is carried by the post 36 immediately above the spring 62, and this disk, acting as a keeper for the spring, is maintained so as to prevent the displacement of the parts therebelow longitudinally of the post 36, by means or the association of the splitavasher 67 (see Fig. 12) with the peripheral groove 68 formed as shown in Fig. 8 in said post.

There are certain parts, however, which for purposes of adjustment (to predetermine the operation of the device) should be capable of longitudinal displacement along the post 36, and these parts are located above the washer 67. They include primarily the dial 31, and the controllerplate 69 fixedly attached to the underside thereof (see Fig. 11) and these parts are also loosely sleeved on the post 36 as shown in Fig. 8. The controller-plate is provided with the teeth 38, the lugs 7 1 and the ca1n-nose 72. The dial 31 carries on its outer face the circumferentially arranged indicia 1, L, 2, 3, etc., and the centrally located adjusting knob 70; this knob surrounding a transverse bore through controller-plate and dial, the bore being counterbored as shown in Fig. 8 to house the expansile coil spring 71 which encircles the post 36. With the screw 72 threaded into the upper end of the post as disclosed, this spring urges the dial and controller-plate toward the ratchet 39 and maintains the teeth 38 of the controllerplate in mesh with the particular teeth of said ratchet which the operators setting of the dial has selected.

In Figs. 3 to 12 inclusive, the casing 73 shown in Figs. 1 and 2 has not been disclosed. This casing, it will be seen, is provided with a slot 73, so that the pin -12 during the movement of lever 47 may not j am against the interior of the casing. If desired, this slot may be dispensed with, since the pin 42 could readily be carried by the lever 40 to project toward the lever 47 and to engage with a suitable slot formed in the lip 75 (Fig. 9) formed on said lever 47. It should be understood that in the present instance the casing 73 is also provided with a suitable slot to permit the free protrusion from the casing as shown of eliminatorknob 74: during trippings of release-lever 4E3. Casing 73 is also apertured to permit of the protrusion thcrethrough as shown of adjusting-knob 70, and is additionally provided with a window 75 (Fig. 1) to disclose an indicium upon the dial-face.

Before proceeding with a description of the various possible settings of the adjusting-knob 70 and dial 31 and the various operations controlled thereby, it should be continually remembered that upon every descent of the stem 8 (Fig. 2), no matter what the setting of the dial 31, the tooth 26 and the link &0 are as above-described driven upwardly simultaneously, so that upon the retraction of the stem 8 to its normally elevated position and after the numeral-wheelreading just-previously carried with it to an effectively depressed or printing position, the link 10 will always return to the location shown in Fig. 6 (for it must again be sent upward ready if necessary to act upon the next depression of stem 8), but the lever 24 does or does not return to the location shown in said Fig. 6 according or not as the position of the release-lever 43, when the tooth 26 is due to descend past the stop-arm 28 of said release-lever, is (on account of the control of parts yet to be described) in the location shown in Fig. 6 or in the location shown in Fig. 9. And it should be borne in mind that if the lever 24 does not so return, the pawls 14:, upon the next descent of the stem 8, will be ineflective to advance the previous numeral-wheelreading, since, despite a rocking of rocking member 15, the plate 20, loosely hung as aforesaid on the spindle 21, will be restrained by the lever 24 (see'Fig. 10) from dropping the pawls 14: against the accumulating notch 32.

The possible operations of the device are substantially as follows: Suppose that it is desired that a number 11 (set up by the numeral wheels 13) shall be repeated indefi nitely. The eliminatorlrnob 7 1 should preliminarily be disposed, if not already so disposed, as shown in Fig.3, 2'. 6., with its latch-arm 57 engaging the latch-arm of lever 51 and the detent maintained free of the ratchet teeth. Dial 31 is thereupon adjusted to expose through the window 75 the indicium B, it being merely necessary for the operator to pull the adjusting-knob 70 away from the casing 73 so as to lift the teeth 38 (Fig. 11) from their previous engagement with the teeth of ratchet 39, then to rotate said knob to bring the indicium R in place beneath the window, and then allow the spring 71 to cause the teeth 38 to drop into mesh with the teeth of the ratchet 39 which, in ac cordance with the new dial setting, are designed to properly mesh with said teeth 38. It should be understood that immediately upon a disengagement of teeth 38 with ratchet 39, the coil-spring 62, if the ratchet is not already so arranged that its stop-pin 6 1 is abutting against the stop-pin located in the plate 27 instantaneously is free to act upon the ratchet in anti-clockwisedi- V rection to bring said stops into the proper abutment; from which it will follow that the locations of the respective ratchet teeth are at each dial-setting, in the nature of a constant, and that the locations of the teeth 38, are, at each such setting, in the nature of a cooperant variable. The indicium now showing through the window 75, then, is R; and the controller-plate 69 is so connected to the dial 31 that with this indicium so visible the teeth 38 will predeterminedly fit; l.

tact the ratchet-teeth and not cause any advance of the dial in a clockwise direction (which would of course gradually shift the cam-nose 72). But the link 45 is nevertheless actuated during this ineffectual upward travel of pawl 48, and consequently the cam-nose 55 trips the lever 51 momentarily to unlock the latch-arms 53 and 57, whereupon the spring 59 takes advantage of such unlocking to swing the release-lever 43 away from the latch-arm 57 and to swing the stop-arm 28 into such a position that it engages with the tooth 26 upon the ensuing downstroke of the lever 24 and holds the pawls l4 ineffective (Fig. 10). The camnose 72 is so arranged on the controllerplate 69 that, with the dial set at R, the detent is not thereby prevented (as it is prevented, for instance, in Fig. 7) from allowing the stop-arm 28 to become swung into the path of travel of the tooth 26. Since the pawl 48 cannot as aforesaid turn the ratchet 39, the cam-nose 72 cannot during the maintenance of the setting now con sidered be shifted to change the last-mentioned location of the stop-arm 28. From which it follows that upon each depression of the stem 8, the numeral wheels will impress a number a, but that after none of these impressions will the pawls 14 be re leased to set up the number n+1. The stoparm 28 carries a ramp as shown, so that the tooth 26 may ride thereover, if necessary, to become engaged with the opposite side of said stop-arm. Suppose that a number n is desired to be impressed to times, and then automatically changed to n+1. The x in the present embodiment may represent one time, or any plurality of times from two to twelve. Thus, for instance, with the dial set at l, and the numeral wheels initially reading 1, the impressions would be 1, 2, 3, 4, 5, 6, etc.; or with the dial set at 4 and the numeral wheels initially reading 1, the impressions would be, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, etc.

We set the dial 31 so that the indicium 1, say, will show through the window 75. The controller-plate 69 is so attached to the dial that at this setting of the latter the teeth 38 of the former will mesh with the ratchet teeth, and the cam-nose 72 will be located, as indicated in Fig. 7. "With the teeth 38 as shown in said Fig. 7, one of said teeth (that is, the one of said teeth which is not the same tooth as performed a similar function in the setting R described in the preceding paragraph) will be so positioned as to insure that, when after the stem 8 is depressed to print the numeral 01, the pawl 48 travels upwardly in the slot 37, said pawl will travel ineffectively and not shift the ratchet wheel. The cam-nose 55 will of course meanwhile trip the lever 51 momentarily to unlock the latch-arms 53 and 57,

but stop-arm 28 is held fast and out of the path of tooth 26, due to the cam-nose 72 hearing against the detent 60 (Fig. 7). Consequently upon the retraction of stem 8, the spring 27 (Fig. 10) will be at liberty to drive the pawls 14 against the numeral wheels to change their reading from a to n+1. In a similar manner, the reading n+1, after being printed, will be changed to n+2; and so on; for the cam-nose 72 will continually bear against the detent 60 since one of the teeth 38 as aforesaid prevents the pawl 48 from shifting the ratchet 39. Now the inolioia 1, 2, &c., to 12 are so predeterminedly arranged on the dial 31 that the numerical value of any partioular indicium visible through the window 75 will represent the number of times the ratchet 39, (each of such times to the extent of one tooth and each of such times through an actuation of the pawl 48,) will have to be advanced in a clockwise direction before the cam-nose 72 comes to the location shown in Fig. 7,since immediately after such cam-nose comes to said position and on the next retraction of stem 8 the tooth 26 will not be interfered with by the swinging out of stop-arm 28 and the pawls 14 will advance a reading at to the reading n+1. When the indiciuin 2 registers with window 75, the teeth 38 of the controller-plate 69 will then so mesh with the ratchet teeth that they will not interfere with the eifec tiveness of the subsequent thrusts of the pawl 48, at least not until the number n has been impressed twice, and the cam-nose 72 will be so disposed that after such two impressions (and consequently after the pawl 48, against the energy of the coilspring 62, has by two cooperations with the ratchet teeth advanced the ratchets pin 64 in the direction of the arrows 76 of Fig. 7 a definite distance from the fixed pin 65) said cam-nose will have advanced in the direction of said arrows 76 to lie as shown in Fig. 7. Then it will follow that on the next retraction of the stem 8, i. 6., the retraction following the completion of the second 1111- pression, the tooth 26 will not be interfered with by the swinging out of stop-arm 28 and the pawls 14 will advance the reading a to the reading n+1. Intermediately of the cam-nose 72 thus reaching the location shown in Fig. 7, and after each thrust of the pawl 48 to advance the ratchet against the spring 62, said ratchet would by said spring be whirled back to normal location, i. 6., to bring the pins 64 and 65 into abutment, were it not for the detent 60 which, due to the action of spring 59, slips after each thrust of the pawl 48 between the two ratchet teeth adjacent said detent, as shown in Figs. 8 and 9., This detent, it should be noted, here has its free working end pointed as shown which aids it in slipping from engagement with one ratchet tooth to engagement with another. With the dial set at 2, then, (and the release lever as locked to lever 51 as shown in Fig. 3), the first im-' pression causes the pawl 48 to move the ratchet the space of one tooth in the direction of the arrows 76, the cam-nose 55 con comitantly trips the lever 51 to release the release-lever 43 (see Fig. 9), and the result of this last operation is that the detent looks the ratchet in its new position while at the same time the stop-arm 28 keeps the pa wls 1? from changing the reading 77. to n+1. Net result: (a) one impression of the reading a; (b) the cam-nose 72 is now at the dotted line location 72 of Fig. 7; and (0) the reading a is not yet changed to n+1. The second impression of the reading n moves the ratchet as above the space of one tooth more in the direction of the arrows 76, and the release lever is concomitantly tripped as before (but as an indifferent incident, merely, because the spring 59 has since the above-mentioned first impression been keeping the latch-arms 53 and 57 out of engagement). With the just-mentioned second advance of the ratchet, the cam-nose 72 is simultaneously advanced to the full line location shown in Fig. 7 and thus causes the detent 60 to swing the latcharms 53 and 57 into engagement, thus locking the detent 60 away from the ratchet teeth, immediately whereupon the spring 62 whirls the ratchet and cam-nose 72 back to their initially adjusted positions. The stem 8, on its immediately ensuing retraction, automatically changes the reading a to n+1 via the pawls 14:, since the just-mentioned engagement of latch-arms 53 and 57 has preparatorily removed the stop-arm 28 from the path of the tooth 26. With the dial-setting leftat 2, the new number n+1 may, in the same manner, be impressed twice and then automatically changed to n+2; and so on. In a similar manner. a reading a may as aforesaid be controlled by the dial-setting to be impressed 3, 1-, 5, 6, 7, 8, 9, 10, 11 or 12 times, before being changed to n+1. To take care of each of these cases, the dial-indicia are so arranged with reference to the location of the cam-nose 72 on the dial-carried controller-plate 69 that whichever of the indicia 3, L, 5, 6, 4 7,77 it 8:77 L4 9,77 107,7 '11 01, it 77 ar ranged by the operator initially to show 7 through the window 75, then the cam-nose 72 will accordingly have to travel in the direction of the arrows 76 from its thusdetermined initial location to the full line location shown in Fig. 7, an extent of travel measured by as many thrusts of the pawl 4L8 as is numerically indicated by the indicium so initially exposed by the operator. For it is clear that each pawl-thrust accompanies one of the impressions of the reading a and 14: to advance the reading a to n+1; It may be stated in passing that the ratchet 39 is preferably provided with a number of teeth su'liiciently in excess of the numericalvalue of the highest dial-indicium, to insure that in any case rotation of the ratchet in the direction of the arrows 76, as the result of thrusts of the pawl 48, will always result in bringing the cam-nose 72 properly against the detent 60 (Fig. 7') before either of the teeth 38 reach either the'location shown in Figs. 6 and 7, which as aforesaid will set up what is known as straight consecutive numbering, or a location one degree removed in a clockwise direction from said location shown in Figs. and 7, which as aforesaidwill set up what is known as indefinite repeat numbering. The sense of the preceding sentence will be better appreciated after an examination of Fig. 7, which shows a concrete application of the principle involved. There the ratchet is seen to include not merely twelve (which is the numerical value of the highest 'indicium on the dial-face), but fourteen, teeth. Now the ratchet is by the pawl 48 driven in the direction of the arrows 76 a predetermined number of tooth-spaces. Then the indicium 12," is exposed through the window 75, the cam-nose 72 would lie in the location 72 since if the ratchet were thereafter advanced twelve tooth-spaces in the direction of the arrows 76 said cam-nose would properly reach the location shown in full lines. The dimensions of the parts are such that the cam-nose 72 may during its just described advance pass freely the pivotal or other portions of the levers 4:7, 51 and 43. It will be noted that during said advance of the ratchet the teeth 38, when opposite the detent 60, would prevent the same from swinging in as aforesaid and properly engaging with the adjacent ratchet-teeth, were it not for the provision upon the controller-plate 69 of the lugs 74 (Fig. 11); and it will be seen from Fig. l that, although these lugs are so elevated as not to be withinv range of the pawl as (which would defeat the proper operation of the device when the dial is set as aforesaid either to R or 1), they overlie those ratchet teeth which are not accessible to the detent 60 (Fig. 7), and that the detent 60 is sufficientlyelongated to engage with said lugs.

Attention should be directed to the important design of the right-hand wall of the slot 37, which guides the pawl 4E8, since during each thrust of the latter the spring 50 causes the pin 49 to hug said wall and its dip 76 (Fig. 6) in such a way that While the pawl cannot at any single thrust advance the ratchet to the extent of two teeth, it yet advances it slightly more than one tooth so that the detent 60 will be sure to slip into its new engagement with the newly advanced ratchet tooth and settle squarely into the same to rectify the new ratchet setting. Attention should also be directed to the important features of design which allow of the arrangement of the indicium L on the dial 31, and moreover, without sacrificing the uniformity of the indicia-arrangement, in such a way that, when the L is exposed through the window 76, its exposure always accompanies the attainment by the cam-nose 72 of the dotted line location 72" shown in Fig. 7 (irrespective of whether the cam-nose 72 is due at its full-line position after 2, w or 3/ thrusts of the pawl 48), and thereby gives warning to the operator that after the next depression of the stem 8 to print the then reading a, the said reading will change to n+1. This is accomplished by here making the indiciaarrangement agree with the position in which the dial 31 carries the controllerplate 69, and at the same time taking care that the location of the indicium L on the dial-face will be such that said indicium will show through the window 75 when the cam-nose 72 reaches the location 7 2 shown in dotted lines in Fig. 7. In the present instance the dia-l-face carries as many indicia as the ratchet 39 has teeth, and since one of these indicia is R and another is L, it will be seen that as aforesaid the ratchet has fourteen teeth as compared with the highest numerical value of the highest indicium, 12, carried by the dial face; although in all the dial-face carries fourteen indicia, one over each ratchet tooth when the teeth 38 are in mesh with said ratchet teeth and each of the twelve indicating how many thrusts of the pawl 48 will be necessary to drive the ratchet from its initial position to a position wherewith the cam-nose 72 will take the full-line position shown in Fig. 7.

It will be recalled that hereinbefore reference has been made to the upper terminus of the release lever 43 as the eliminatorknob. The reason whereof is substantially as follows: This knob, in combination with other parts here present, is exceedingly valuable and important and performs a novel function. It will be remembered that for the operator to reset the dial he must pull to the left of Fig. 5 the adjusting knob and hence also the dial 31. Suppose he wishes to eliminate a just-made impression of a reading n, which with the dial set at 00 he had impressed any number of times, so that he can properly change the dial setting without losing the reading a. By means of the feature now being discussed, the operator is positively prevented from changing the dial setting until the coil spring 62 returns the ratchet to normal position, since he must, as aforesaid, first swing the horizontal slot in detent 60 clear of the edge of the dial and since this will take the detent clear of the ratchet teeth. It is true that to release the dial edge he must, in swinging said detent clear thereof, manipulate the eliminator-knob to bring into engagement the latch-arms 53 and 57, which will in turn dispose the stop-arm 28 out of the path of the tooth 26; but the very next depression of stem 8 will, before the conclusion thereof, and via the movement of the cam-nose 55 and the tripping of lever 51, redispose the stop-arm 28 in the path of the tooth 26 so that thereafter no retraction of the stem 8 will be effectual to cause the pawls 14 to advance the reading a to n+1 until the camnose '72 reaches the full line location of Fig. 7 after the resetting of the dial.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mech anism including an actuating pawl, of a rotatable ratchet wheel, a dial adjustable in one of a plurality of adjustments upon said ratchet wheel, means for moving the ratchet wheel and said dial as so adjusted once at each of certain actuations of the handle, and means adapted predeterminedly and in accordance with the aforesaid adjustment of said dial to disable the actuating pawl.

2. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mecha nism including an actuating pawl, of a ratchet wheel, a dial adjustable in one of a plurality of adjustments upon said ratchet wheel and rotatable therewith, means for moving the ratchet wheel and the dial once at each actuation of the handle, means adapted predeterminedly and in accordance with the aforesaid adjustment of said dial to disable the actuating pawl, and means for causing the actuating pawl subsequently to be freed of its disability.

3. lhe con'ibination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a rotatable ratchet wheel, a cam adapted after the below-mentioned adjustment to be carried by the ratchet wheel and coaxially adjustable to one of a plurality of positions thereon, means for moving the ratchet wheel once at each of certain actuations of the handle, and means adapted predeterminedly to disable the actuating pawl, said cam thereafter predeterminedly freeing from disability said actuating pawl.

at. The combination with. the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a rotatable ratchet wheel, means for moving the ratchet wheel once at each of certain actuations of the handle, means coaXially adjustable on the ratchet wheel and adapted to disable the actuating pawl, and means adapted to maintain the actuating pawl disabled until after a predetermined number of actuations of the handle, and then predeterminedly to free said pawl from its disability.

5. The combination with a numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a rotatable ratchet wheel fixedly carrying the dial, means for moving the ratchet wheel once at each of certain actuations of the handle, and a coaXially adjustable controller carried by the dial and adapted to be preliminarily arranged in a predetermined location whereby said controller will cause a predetermined disablement of the actuating pawl.

6. The combination with a numeral print ing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a wheel, said dial being preliminarily adjustable in one of a plurality of adjustments upon said wheel, means for moving the wheel and the dialas thus adjusted on-the wheel once at each of certain actuations of the handle, means adapted to disable the actuating pawl, and means carried by the dial adapted predeterminedly and in accordance with the adjustment of said dial to free the actuating pawl from its disability after a predetermined number of actuations of the handle.

7 The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a wheel, means for moving the wheel once at each of certain actuations of the handle, means for simultaneously moving the dial, means adapted to disable the actuating pawl, means carried by the dial adapted to free the actuating pawl from its disability predeterminedly after a actuations of the handle, and adjusted again to disable said actuating pawl after n+1 actuations of said pawl.

8. The combination with the numeral printing wheel, the actuating handle, and

the numeral printing wheel advancing mech anism including an actuating pawl, of a dial, a ratchet wheel adapted for adjustment upon said dial, means for moving both the dial and the ratchet wheel as so adjusted thereon once at each of certain actuations of the handle, and means adapted predeterminedly to disable the actuating pawl.

9. The combination with the numeral printing wheel, the actuating handle, and

the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable dial, a wheel angularly adjustable upon the dial for subsequent concentric rotation therewith, a controller carried by the dial, means for moving the wheel once at each of certain actuations of the handle, and means adapted predeterminedly to disable the actuating pawl.

10. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a rotatable controller fixedly carried by the dial, means for moving the controller once at each of certain actuatiens of the handle, said means including a ratchetwheel termined plurality of adjustments upon said dial, and means controlled by said controller adapted predeterminedly to disable said pawl.

11. The combination with a numeral printing wheel, the actuating handle, and the numeral printing wheel advancing meclr anism including an actuating pawl, of a rotatable dial, a simultaneously rotatable wheel, said wheel'being preliminarily adjustable in one of a plurality oi? adjustments upon said dial, means for moving both said dial and said wheel at each of certain actuations of the handle, and means adapted after a number of said actuations predeterm-i-nedly and in accordance with the aforesaid adjustment of said ratchet upon said ed to be carried by the ratchet in one of a plurality of adjustments thereon, whereat an inter-tooth space on said ratchet will be filled thereby to the end that in said adjustment saicl device when predeterminedly adjacent said means will prevent further forward movement of said ratchet.

13. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a dial, a rotatable ratchet wheel, a controller carried by the ratchet wheel and including a cam coaxially adjustable to one of a plurality of positions thereon, and means for moving the ratchet wheel. once at each of certain actuations of the handle, said cam adapted to disable the actuating pawl predeterminedly and in accordance with the adjustment of said controller.

14. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a normally rotatable dial bearing indicia, means normally adapted to move the dial once at each of certain actuations of the handle, said means including a ratchet wheel disconnected from the dial and a pawl operating in connection with said wheel, and a device fixedly carried by the dial and adapted to be adjusted upon the wheel thereby to prevent any subsequent actuation of the handle from moving said dial.

15. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel mechanism including an actuating pawl, of a normally rotatable dial, means normally adapted to move the dial once at each of certain actuations of the handle, means normally adapted to disable the actuating pawl concomitantly with each such actuation of the handle, and a device adapted to be adjusted upon the dial thereby to prevent upon any subsequent actuation of the handle the actuation of said disabling means.

16. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel, means adapted upon a first actuation of the handle to disable the pawl, and a device mounted coaxially with and adjustably carried by said rotatable wheel and preliminarily adjustable to determine whether upon a second actuation of the handle the pawl will or will not be freed of its disability.

17 The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of engageable portions, means for normally engaging with a new engageable portion upon each actuation of the handle, and a device carried by the wheel and adjustable thereon to render a certain engageable portion non-engageable by said means.

2 18. The combination with the numeral printing wheel,the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of engageable portions, means for normally engaging with a new engageable portion upon each actuation of the handle, thereby to rotate said rotatable wheel; and a device carried by the wheel and adjustable thereon to render a certain engageable portion non-engageable by said means when said engageable portion is carried by the rotation of said rotatable wheel to a predetermined proximity to said means.

19. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel, means adapted upon a first actuation of the handle to disable the pawl, and a cam mounted coaXially with and preliminarily adjustable upon said wheel to determine whether upon a second actuation of the handle the pawl will or will not be freed of its disability.

20. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of engageable portions and a plurality of indentations, means for normally engaging with a new engageable portion upon each actuation of the handle thereby to rotate said rotatable wheel, and a device carrying a member adapted to be adjusted with refer ence to a particular indentation to render an adjacent engageable portion non-engageable by said means.

21. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of engageable portions and a plurality of indentations, means for normally engaging with a new engageable portion upon each actuation of the handle thereby to rotate said rotatable wheel, and a device mounted upon said rotatable wheel and carrying a member adapted to be adjusted with reference to a particular indentation to render an adjacent engageable portion non-engageable by said means.

22. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of engageable portions and a plurality of indentations, means for normally engaging with a new engageable portion upon each actuation of the handle thereby to rotate said rotatable wheel, means adapted at certain times to disable the actuating pawl, and a devlce carrying a member adapted to be adjusted with reference to a particular indentation to render an adjacent engageable portion non- .engageable by said means and carrying also a member adapted at certain times to prevent a disablement of the actuating pawl.

23. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechiael i g an a u g pa of a 1 'tatable wheel carrying a plurality of engageable portions and a plurality of inden tations, means for normally engaging wlth rotatable wheel, a detent for engagement with an indentation to maintain said rotatable wheel in its new position, and a device carried by the wheel and adjustable thereon to render a certain engageable portion nonengageable by'said means and carrying a portion engageable by said detent in substitution for an engageable portion rendered non-engageable by the adjustment of said device.

24. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanis'm including an actuating pawl, of a rotatable wheel carrying a plurality of teeth,

a dial fixedly carrying a member adjustable between any two of certain of said teeth to lock said dial to said wheel, and means adapted at each of certain actuations of the handle to move said wheel and dial.

25. The combination with the numeral printing wheel, the actuating handle, and the numeral printing wheel advancing mechanism including an actuating pawl, of a rotatable wheel carrying a plurality of teeth, a dial fixedly carrying a member adjustable between any two of certain of said teeth to lock said dial to said wheel, and means adapted ateach of certain actuations of the handle to move said wheel and dial, said means being prevented from moving said wheel at actuations ofthe handle whereat said member is in predetermined proximity to said means.

26. In a device of the class described, in combination, a rotatable ratchet including a plurality of teeth, a dial rotatable with said ratchet and carrying a member for re movable engagement with the teeth of said ratchet, means adapted to maintain said member and said teeth in engagement whereby 'said dial and said ratchet are interlocked for simultaneous rotation.

27. In a device of the class described, in combination, a rotatable ratchet including a plurality of teeth, a dial rotatable with said ratchet, and carrying a member for remov-.

able engagement with the teeth of said ratchet, means adaptedto maintain said memberand said teeth in engagement whereby said dial and said ratchet are interlocked for simultaneous rotation, and acam fixedly earriedfby said dial at a predetermined distance from said member.

28. In a device of the class described, in combination, a rotatable ratchet, means adapted .to rotate said ratchet a-predetermined degree at each actuation thereof, a

detent adapted toimaintain said ratchet in its new position after each rotation, a rotary combination with the actuating handle and the numeral wheel actuating pawl, a member normally urged to disable the pawl, means adaptednormally to restrain said member from disabling the pawl, and means adapted at each actuation of the handle to free said member from the restraint of said restraining means. I

30. In a device of the class described, in combination with, the actuating handle and the numeral wheel actuating pawl, a member normally urged to disable the pawl, means adapted normally to' restrain said member from disabling the pawl, means adapted at each actuation of the handle to free said member from the restraint of said restraining means, and an adjustable device adapted predeterminedly additionally to restrain said member from disabling said pawl.

81. In a device of the class described, in combination with the actuating handle and the numeral wheelactuating pawl, a member normally urged to'disable the pawl, means adapted normally to restrain said member from disabling the pawhand means adapted at each actuation of the handle to free said member from the restraint of said restrain mg means. said last-mentioned. means ineluding a. latch device which is tripped at] each actuation of the handle- 82. In a device of the class described, in

combination with theactuating handle and the numeral wheel actuating pawl, a member normally urged to disablethe pawlymeans adapted normally to restrain saidmember from disabling thepawl, means adapted at each actuation of thehandle to free said member from the restraint of said restrainmentioned member. from disabling. said pawl ing means, a rotatable ratchet, an auxiliary.

at a certain. one only of each of the. actuav tlons of said handle, said certain one of sald actuations being predetermined of the pre-' liminary adjustment upon said ratchet by said auxiliary member.

33.v In a device of the combination with the actuating handle and the numeral wheel actuating pawl,'a member 7 normally urged to disable the pawl,"means class described, in

iee

adapted normally to restrain said member from disabling the pawl, means adapted at each actuation of the handle to free said member from the restraint of said restraining means, a rotatable ratchet, an auxiliary member adjustable upon said ratchet in one of a plurality of possible adjustments, and means adapted to move said ratchet a predetermined extent upon each actuation of the handle when said auxiliary member is in a certain adjustment upon said ratchet, said auxiliary member carrying a device independently of and additionally to the means 'first mentioned, to restrain the first mentioned member from disabling said pawl at a certain one only of each of the actuations of said handle, said certain one of said actuations being predetermined by the preliminary adjustment of said auxiliary member upon said ratchet, said auxiliary member being adapted to be rotated with said ratchet when adjusted thereon.

34. In a device-of the class described, in combination with the actuating handle and the numeral wheel actuating pawl, a rotatable ratchet, means adapted to rotate said ratchet at each actuation of said handle, a member carried by said ratchet and normally manually readjustable upon said ratchet, a device normally urged to disable the pawl, means adapted normally to re strain said device from disabling the pawl, means adapted at each actuation of the handle to free said device from the restraint 01"" said restraining means, and means adapted to prevent a readjustment upon said ratchet of said member when said device is freed from the restraint of said restraining means. 35. In a device of the class described, in combination with the actuating handle and the numeral wheel actuating pawl, a rotatable ratchet, means adapted to rotate said ratchet at each actuation of said handle, a member carried by said ratchet and normally manually readjustable upon said ratchet, a device normally urged to disable the pawl, means adapted normally to restrain said device from disabling the pawl, means adapted at each actuation of the handle to free said device from the'restraint of said restraining means, and means adapted to prevent a readjustment upon said ratchet of said member when said device isfreed from the restraint of said restraining means, saidmembe carrying an element adapted predetermmedly additionallyto restrain said device from disabling said pawl.

36. In a device of the class described, in combination with the actuating handle and the numeral wheel actuating pawl, a rotatable ratchet, means adapted to rotate said ratchet at each actuation of said handle, a member carried by said ratchet and normally manually readjustable upon said ratchet, a device normally urged to disable the pawl, means adapted normally to restrain said device from disabling the pawl, means adapted at each actuation of the handle to free said device from the restraint of said restraining means, and means adapted to prevent a readjustment upon said ratchet of said member when said device is freed from the restraint of said restraining means, said member carrying an element adapted to predeterminedly to dis able the ratchenrotating means.

37. In a device of the class described, in combination with the actuating handle and the numeral wheel actuating pawl, means normally effective to disable the actuating pawl at each actuation of the handle, means adapted to render ineffective said disabling means, controlling means for a predetermined actuation of the means last mentioned, means adapted to move said controlling means at each. actuation of the handle, said controlling means being preliminarily adjustable in a plurality of adjustments each of which adjustments predetermines a particular number of successive actuations of the handle before said controlling means is moved to a predetermlned point, sa1d predetermined point corresponding to a location of the controlling means whereat upon the next actuation of the handle the means adapted to render ineffective said disabling m ans will be actuated, and means for signaling the arrival of said controlling means at said predetermined point.

38. his a new article of manufacture, an attachment for numbering machines utilizing a numeral wheel actuating pawl, including a means adapted to disable the actuating pawl, means adapted to render ineffective said disabling means, means for automatically controlling in predetermined sequence the two means above mentioned, said means including a ratchet wheel and a cam mounted coaXially with and adjustably carried thereby, and means adapted to actuate said controlling means.

39. As a new article of manufacture, an attachment for a numbering machine utiliz ing an actuating iandle, including a resultaccomplishing connection attachable to a moving part of the numbering machine, a disabling means for said connection, controlling means adapted predeterminedly to re lease saiddisabling means, said means including a ratchet wheel and a cam mounted coaxially with and adjustably carried thereby, and an adjusting connection adapted to V dle not of'a suflicient plurality to advance determined one of a plurality of possible relocations; one of said indicia constituting a symbol which always arrives adjacent said predetermined point in advance, to the extent at least of one handle-actuation, of the arrival of said significant indicium at said predetermined point.

41. In a device of the class described, in combination with the actuating handle, a movable member carrying a plurality of sequentially arranged indicia; manually operable means adapted preliminarily to adjust said member whereby a significant indicium is 'preparatorily located adjacent a predetermined point, means actuable by the actuation of the handle adapted either to move said member or not move said member at each actuation of said handle according to the adjustment'of the manually operable means; said manually operable means being preliminarily adjustablev to predetermine whether said indicium at the next actuation of the handle shall not be moved or shall be moved step by step, each such movement to follow an actuation of the handle, to a predetermined one of a plurality of possible reloeations; one of said indicia constituting a symbol which always arrives adjacent said predetermined point in advance, to the extent at least'of one handle-actuation, of the arrival at said predetermined relocation of said significant indicium whenever on account of the adjustment of said manually operable means said indicium is arrivable at said relocation. V

42. In 'adevice of the class described, in combination with the actuating handle, numeral printing wheels and numeral printing wheel. advancing mechanism; means adapted to disable said mechanism at each actuation of the handle whereby a reading n established by the numeral wheels will not be advanced to 'n-j-m; controlling means in-,

cluding an adjustable part adapted to predetermine how many actuations of the handle must necessarily take place before said 7 reading a is advanced to n-|m; means adapted to prevent a readjustment of said adjustable part after an adjustment thereof and a subsequent number of actuations of the hanpawl adapted at each downward actuation of the handle to drive said pawl predeterminedly toward the periphery of said wheel, a dial mounted on said shaft above said ratchet andcapacitated for movement 1on gitudinally of said shaft, a cam fixedly carried on the underside of said dial and carryinga member for adjustment between any two of said peripheral teeth, yieldable means adapted to maintain said member in an adjustment with said peripheral teeth, said member in one of a plurality of possi ble adjustments being adapted to prevent an engagement between said pawl and any one of said peripheral teeth, said pawl being adapted at each actuation of the handle to engage with. one of said peripheral teeth.

and advance said wheel, said cam and said dial a predetermined distance when not disabled by said member, a detent urged to ward the periphery of said wheel to engage between two of said peripheral teeth, latch means adapted normally to maintain said detent removed from'the'periphery of said wheel, means adapted to trip said latch means at each actuation of said handle and release said detent to engage with two of said peripheral teeth to maintain said Wheel in the position which it occupies at'that instant, means adapted predeterminedly to cooperate with said cam to'additionally prevent said detent from engaging with said peripheral teeth whereby said spring means is free to return said wheel to its predetermined initial position if it be then removed therefrom, and a member normally non-interferant Wltll tllG actuation ofsaid advancingmechanism at eachractuation of the handle adapted to disable said advancing mechanismat each trip of said latch means. In testimonywhereof I aiiiX my signature in presence of two WliJIlGSSGS.

, MAXIMILIAN IL'KERN. Witnesses:

MAnYl-LLuwIs, 1 HELEN -V. Frrzra'rnron';

: Copies of this patent may be obtained for five cents each, by addressing the Commissioner of iPatents, i

' Washington, D. G. 

